20/40: Poorly played AT?

[Mr. Curious]

Live $20/40 9 handed ring game

Table is loose, aggressive. If anyone has a big hand, they wait until the turn to raise (misplaced slowplay syndrome). No one thinks about protecting their hand.

Hero is UTG with A[img]/images/graemlins/diamond.gif[/img]T[img]/images/graemlins/heart.gif[/img]

Preflop: Hero <font color="red">raises</font>, UTG1 folds, MP1 folds, MP2 calls, MP3 calls, CO folds, Button calls, SB calls, BB folds

Reads:
MP2 is semi loose, unless there is a raise in which case he could play any two cards. Very aggressive postflop, unless he has nothing.

MP3 will call any time I open raise. He is ultra passive pre &amp; post flop, but will call down with mid pair or better.

Button is looking for action and a raise means he is in. He'll have any pair, any suited, any ace or king, any semi connected. He's aggressive post flop with mid pair or better. He's only super aggressive (auto bet mode) if he raised preflop.

SB's hand range is the same as the button, but he is always aggressive postflop. His bet is just as likely air as it is the nuts.

Flop: 7[img]/images/graemlins/spade.gif[/img]8[img]/images/graemlins/spade.gif[/img]9[img]/images/graemlins/heart.gif[/img] (5 players)
Pot: 11 SB

SB <font color="red">bets</font>, Hero <font color="red">raises</font>, MP2 calls, MP3 folds, Button calls, SB calls

Turn: A[img]/images/graemlins/heart.gif[/img] [7[img]/images/graemlins/spade.gif[/img]8[img]/images/graemlins/spade.gif[/img]9[img]/images/graemlins/heart.gif[/img]] (4 players)
Pot: 10.5 BB

SB <font color="red">bets</font>, Hero calls, MP2 <font color="red">raises</font>, Button folds, SB calls, Hero calls

River: 2[img]/images/graemlins/diamond.gif[/img] [7[img]/images/graemlins/spade.gif[/img]8[img]/images/graemlins/spade.gif[/img]9[img]/images/graemlins/heart.gif[/img] A[img]/images/graemlins/heart.gif[/img]] (3 players)
Pot: 16.5 BB

SB checks, Hero checks, MP2 <font color="red">bets</font>, SB calls, Hero calls